It has long beeii known that, if the blood of one species of animnal is injected into the circulation of another species, the corpuscles of the foreign blood are at once destroyed and their hawlnoglobin set free. An analogous haemolysis may occur when the bloods of certain individuals are mixed with those of other indlividuals of the same species, and the observation of this fact led to the dis...

The thymic microenvironment constitutes a unique cell environment composed of thymic epithelial cells, myoid cells, and bone marrow-derived accessory cells for the differentiation, maturation and selection of T lymphocytes. The histological feature of thymus is markedly dependent on the age of individual and on various negative stimuli. Our study group consisted of fourteen newborns whose thymu...

IT has been shown by Zuntz(l), Alexander Schmidt(2), and Fre'de'ricq(3)2, that the serum of blood contains more C02 than the corpuscles. On the other hand, it is stated that if C02 acts on the serum and corpuscles which have been separated from one another, then the corpuscles contain more C02 than the serum. This has been explained by an interchange of acid and basic radicles between corpuscle...

1. What appear to be certain definite stages in the migration of the malarial parasite from red corpuscle to red corpuscle may be demonstrated by thorough and persistent observations,-not minutes spent on each specimen, but many hours. 2. The migration of the malarial parasite from red corpuscle to red corpuscle gives a reasonable explanation of the loss of red corpuscles which cannot be accoun...

The AA. have studied the nerve component of male copulatory organ and ventral part of female proctodeum in the ostrich. This paper represents the concluding part of the plan of research that aimed to verify some data and hypothesis referred in previous observations. The innervation of the considered districts was always constituted by autonomic and sensitive somatic nerve components. The autono...

Calcitonin (CT) is a calcium regulating hormone produced mainly by the parafollicular C cells of the thyroid gland in mammals. In lower vertebrates, these cells are concentrated primarily in a specialized gland, the ultimobranchial gland. The common structure of CT is 32-amino acid residues with a seven-residue cyclic loop formed by disulfide bond between cysteines at position 1 and 7 and proli...

The present study was carried out to analyze the differences in the activity of hormone stanniocalcin (STC) between male and female fishes of Mastacembelus armatus during their gonadal cycle. A large variation in nuclear diameter of cells of corpuscles of Stannius (CS) were recorded in relation to testicular cycle as well as ovarian cycle which indicates that the cellular activity varied with d...

The involvement of the calcium-sensing receptor (CaSR) in Ca(2+) homeostasis was investigated in larval zebrafish, Danio rerio. The expression of CaSR mRNA was first observed at 3 h posfertilization (hpf) and increased with development until plateauing at ∼48 hpf. At 4 dpf, CaSR mRNA was increased in fish acclimated to low Ca(2+) water (25 μM vs. 250 μM in normal water). Using immunohistochemis...

1. The isoagglutination reaction of 131 infants and children from birth to 10(1/2) years was examined by testing their serum and washed corpuscles microscopically against the serum and corpuscles of each of the four adult groups. 2. The grouping as present in adults is rarely present in blood from the umbilical cord. 3. At birth and during the 1st month of life isoagglutination is rarely presen...